re PR rtl-optimization/68691 (ICE at -O3 with -g enabled on x86_64-linux-gnu in alter_subregs, at lra-spills.c:610 (in 32-bit mode))
2015-12-10 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/68691
* lra-spills.c (lra_final_code_change): Check pseudo occurrence
number in non-debug insns and remove debug insns if necessary.